438438342287444 has 6 divisors (see below), whose sum is σ = 767267099003034. Its totient is φ = 219219171143720.

The previous prime is 438438342287423. The next prime is 438438342287497. The reversal of 438438342287444 is 444782243834834.

It can be written as a sum of positive squares in only one way, i.e., 273631544243344 + 164806798044100 = 16541812^2 + 12837710^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54804792785927 + ... + 54804792785934.

It is an arithmetic number, because the mean of its divisors is an integer number (127877849833839).

Almost surely, 2^{438438342287444} is an apocalyptic number.

It is an amenable number.

438438342287444 is a deficient number, since it is larger than the sum of its proper divisors (328828756715590).

438438342287444 is a wasteful number, since it uses less digits than its factorization.

438438342287444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109609585571865 (or 109609585571863 counting only the distinct ones).

The product of its digits is 1585446912, while the sum is 68.

The spelling of 438438342287444 in words is "four hundred thirty-eight trillion, four hundred thirty-eight billion, three hundred forty-two million, two hundred eighty-seven thousand, four hundred forty-four".